The invention relates to increased plant cell transformation efficiencies due to addition of the Arabidopsis RTNLB4 gene, encoding a protein that interacts with the major component of the Agrobacterium tumefaciens T-pilus, in plants. The present invention provides methods and compositions to increase frequency of obtaining transgenic plants in plant biotechnology industry.本發明係關於一種可增加植物被轉殖效率之方法,主要係將一阿拉伯芥植物中,可與農桿菌T線毛組成蛋白質結合之RTNLB4蛋白質的基因轉殖入植株中以提高其被轉殖的效率。因此,本發明提供植物生物科技產業一提高獲得轉殖基因植物效率之方法。